Math Problem Statement

Given the graph of f(x) shown above, evaluate lim (x -> 3) f(x).

Solution

The problem asks to evaluate the limit limx3f(x)\lim_{x \to 3} f(x) based on the provided graph of the function f(x)f(x).

Step-by-step analysis:

  1. Behavior near x=3x = 3: We observe that as xx approaches 3 from the left and right, the function f(x)f(x) appears to approach a value, but there is a dot at y=3y = -3 indicating a hole or discontinuity.

  2. Left-hand and right-hand limits:

    • As x3x \to 3^{-} (from the left), the function values seem to get closer to y=3y = -3.
    • As x3+x \to 3^{+} (from the right), the function also appears to approach y=3y = -3.
  3. Discontinuity: The point (3,3)(3, -3) is shown as a solid dot, meaning the function might be discontinuous at x=3x = 3. However, this does not affect the limit; we only care about the behavior as xx approaches 3, not the actual value of f(3)f(3).

Conclusion:

Both the left-hand and right-hand limits approach y=3y = -3, so the overall limit is 3-3.

Final Answer:

limx3f(x)=3\lim_{x \to 3} f(x) = -3 The correct choice is -3.

Would you like any additional details or have any further questions?

Here are five related questions you can explore:

  1. What is the significance of the solid dot at x=3x = 3?
  2. How do left-hand and right-hand limits affect the existence of a limit?
  3. What is the difference between a limit and the function value at a point?
  4. What types of discontinuities can occur, and how do they impact limits?
  5. How do you handle limits at infinity based on graphical behavior?

Tip: When evaluating limits graphically, always check both sides (left and right) to confirm whether they approach the same value.

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Math Problem Analysis

Mathematical Concepts

Limits
Graphical Analysis
Discontinuities

Formulas

Limit definition: lim (x -> a) f(x)

Theorems

Left-hand limit theorem
Right-hand limit theorem
Limit existence theorem

Suitable Grade Level

Grades 10-12